"Locomotive Engine Running and Management" by Angus Sinclair is a technical treatise focused on the operation and maintenance of locomotive engines, written in the late 19th century. The book serves as a comprehensive guide for locomotive engineers, detailing the principles of efficient engine management, care, repair, and the technical intricacies involved in locomotive operation. It aims to provide clear and practical insights into the responsibilities and skills required for ensuring smooth and economical train operations. The opening of the book sets the stage by introducing the author's personal experience as a locomotive engineer. Sinclair outlines his motivation to document observations and issues encountered while operating engines, which ultimately formed the basis for this publication. He discusses the importance of understanding mechanical principles, the rigorous self-improvement needed by engineers, and the value of practical knowledge gained through experience. The introductory chapters highlight the attributes of successful locomotive engineers, emphasize the necessity of systematic inspections, and provide guidance on preparing engines for service, laying the groundwork for the detailed operational techniques and practices covered in subsequent sections. (This is an automatically generated summary.)